Heating apparatus.



G. MACHLET, JB. HEATING APPARATUS. APPLIGTION FILED nov. za, 190s.

A1() SHEETS-SHEET 1v.

/ N TOI? Y Patented Jiuy 30, w12.

G. MAGHLET, JE. HEATING APPARATUS.

" G. MAGHLBT, JR.

, HEATING' APQABATUS. K' AP'PLvIOArioN I'IYLBD nom-23, 1908.1 LGS-3,81 6.

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WITNESS s:

G. MAGHLET, JR.'

HEATING APPARATUS.

APPLIoATIoN FILED 11017.23, 1908.L

Patented Julyso, 1912.

10 SHEETS-SHBET 5.

mg@ M@ ,E i.

-G..MACHLET,' 1TB.

. HEATINGAPPARATUS.

-APPLIUATION FILED Nov. 23, 1908'.

Patented July 30, 1912.

10 SHEETS-SHEET 6.

4 F- Lm 4 s \7 i @m15 F919 @y 0 Fg; 21 l G. MAHLET, JR. HEATING APPARATUS. APPLICATION FILED Nov. 23, 190B. f

Patented July 30, 1912.

G. MAGHLET, JR. HEATING APPARATUS. APPLIUATIQN FILED NOV. 23, 1908.

www@ l 10 SHEETS-SHEET 8.

Patented July 3o, 1912.

G.MAGH LET, Jn'. HEATING APPARATUS. L APPLloATIoN'rnmjnomza,190s. 1,033,816. y rammed July 30,1912, ao snnB'rs-snnn'r 9.

INVENTOR :l

4vUiviriii) sTA'rnsPArENT onnicii.

GEORGE MACH'LET, Jn., or nLizABETH, NEW JERSEY.

Specification of Letters Patent vHiiArIivci APPARATUS.

Patented J illy 30, 1912.

Application filed November 23, 1908. Serial No. 464,140.

To all whom it may concern:

Be it known that I, GnonenMAcHLn'i, Jr., a citizen of the United States, residing in Elizabeth,'in the 'county of Union and 'St-ate of New Jersey, have invented certain ne w and useful Improvements in Heating Apparatus, of which the following is a specification. v

This invention relates generally to automatic regulators and` controllers or analogous contrivances, and especially to those in which there is employed any movable device, as for instance a needle, to indicate the condition of an apparatus which is to be regulated, stopped or started, or otherwise controlled.

The invention is illustrated in connection with a gas and air furnace, although so f ar as many of its broad features are concerned, its use is not limited to' furnaces or even to heat-controlling means, as they are capable of wide application in various arts.

In many classes of indicating devices, as

p for instance voltmeters, and certain kinds of ,be employed to operate means for regulating the apparatus whose condition is lshown by t-he indicator, particularly since it is difficult or impossible to cause such a weakly acting indicatorto perform any Work, even if it could be done without destroying its accuracy. y l

The. principal object of the present invention is to produce a practicable regulator or other controller, whose operation may be accurately controlled by indicators of this class, even though they are extremely delicate in construction and weak in operation; and particularly to provide for the regulation of a. furnace or any other heat-ing or coolin apparatus.

, A fiirther object of the invention is to provide for causing a change in the condition of an apparatus, as for instance 'in the .heat-of a furnace, to proceed a predetermined point, andfor the automatic maintenance of such condition at such point for an indefinite time. There is accordingly provided a prime mover, as for inst-ance a reciprocating engine driven by compressed air, capable of shifting a regulating device orcont-roller to alternate positions, whereby the condition of the furnace or'any other apparatus may be regulated, or any mechanisr'n may be stopped orl started, etc. The movable needle of the voltmeter or other indicating apparatus is provided with means to control the actuation of said regulating device by said prime mover. This is accomplished without exertion or effort on the part of the needle beyond what is required to bring it to the point at which the regulation is to. take place.

The operative connection between the needle and tlie prime mover is effected by means of a tactor or similar device, which is caused by the prime mover to beat repeatedly into and out of the path of the needle. While the needleV is moving toward the tactor, no change is effected; but when the needle moves into t-he path of the tactor, the tactor is ofv course arrested by engagement with the needle (the latter being provided with a suitable support) and by reason of this arrest a shifting of the regulating or controlling device to an alternative position is effected. Thus no stress is put uponthe needle, nor is anything done to render the latter liable to act inaccurately; while on the other hand the movement of the regulating y device is positively eil'ected by powerful means. Upon being arrested by the needle,

said tactor is automatically latched out of use, anda companion tactor is caused to dip repeatedly into the path of the needle, but on the opposite side thereof, so that when the needle recedes it will soon get into the path of -the second tactor and arrest it; whereby an opposite movement of the regulating device to an alternative position is ei'ected, and whereby also the second tactor is latched out of use and the first tactor again rendered active. The apparatus may .be set to cause these operationsto occur at Between the tactors and the prime mover d is aninterponent, through which movement is communicated ,from the rime mover to the active taeter andlbyw ich alternative movements of a'regul'atin'gvalve or other controllingv mechanism are produced. 1n the present instance this interponent is in the form offapivoted tumbler, and it is provided with 'a [double-acting spring. The prime mover operates to swingthe tumbler suiiiciently to carry the spring over the dead center, and the spring then becomes eective to complete the stroke of the tumbler, whereby the regulating valve or controller is shifted to its alternative position.

The tactors are provided with individual springs, and connected to sears. The active scar is normally caused by each spring to bear against a rest provided upon .the tumbler. hs the latter begins to move away from normal position, the sear is permitted to swing into a notch formed on the tumbler, thereby accomplishing a two-fold purpose, one of which is to permit the associated tactor to dip into the path of the voltmeter needle, and the other of which is to enable the sear to arrest the tumbler prematurely, so that movement of the latter cannot be completed by the double-acting spring, andv so that no movementcan be effected of the regulat-ing valve or other controller. When, however, the tactor isi arrested by the voltmeter needle, there `is nothing to prevent the completion of the full stroke of the tumbler and consequently the reversal of the regulating valve. The tumbler at the final part of its full stroke also latches out of use the arrested tactor, and effects the release of the other tactor.'

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a diagrammatic side elevation showing a' prime-moving arm as having lcompleted its 11p-stroke, and a pair of tactors, of which the rear or idle one is latched out of use, and the front or active one has just been lifted. Fig. 2 is a part-sectional side elevation of one form of regulating mechanism constructed within the present invention. Fig. 3 is a plan of the device seen atFig. 2. Fig. 4 is a sectional diagrammatic elevation to illustrate the operation of reducing the supply of fuel to a furnace when its heat reaches a predetermined point. Fig. 5 is a' view similar to Fig. 4 but illustrating the 'operation of increasing the supply of fuel to a furnace when its heat has declined to a predetermined point. Figs. 6 to 9 inclusive illustrate a succession of stages in the operation of the tactor device which controls the reduction in the fuel supply. Figs. 10 to 13 are diagrammatic end elevations showing the relation of the voltmeter needle to the tactors at the four stages represented in Figs. 6 to 9. Figs. 14 to 17 inclusive illus- Loaaeiej trate a succession'of stages in the operation of thetactor device which controls the increaseinthe fuel supply. Figs. 18 to 21 are diagrammatic end elevations showing Athe relation of the voltmeter needle to the tactors at the four stages represented in Figs. 14 ltohl?. Fig. 22 is a fragmentary sectional elevation taken at the line A-A- of Fig. 24, and illustrating the valve mech# anism which controls the movements of the prime-moving compressed-air motor or engine;` the arm or beam of the latter being shown at the completion of its up-strolre. Fig. 23 is a sectional elevation sho-wing the engine arm nearly at the completion of its up stroke, and showing the regulating valve as having been moved down to the Fig. 5 position to increase the supply of fuel to the furnace. Fig. 24 is a sectional plan taken on the 'line B-B of Fig. 23. Fig.'25 is a sectional elevation similar to Fig. 23, but showing the air motor arm nearly at the bottom of its down stroke, and also showing the fuel-controlling valve as lifted to the Fig. 4 position to reduce the supply of fuel in the furnace. Fig. 26 is a sectional elevation taken on the line C-C of Fig. 24 and showing the fuel-controlling valve in the Fig. 5 position. Fig. 27 is a fragmentary sectional elevation taken on t-he line DD of Fig. 24, showing the parts in the Fig. 22 position. Fig. 28 is a section similar to Fig. 27, but showing the parts at the completion of the down stroke of the airl motor arm. Fig. 29 is a sectional elevation of the line C-G of Fig. 24, and showing the fuel controlling valve in the Fig. 4 osition to reduce the supply of fuel to the urnacc. Fig. 30 is a perspective view of a shell or hollow cylinder cut away to form chambers and ports to be opened and closed by the fuel-controlling valve which works in said shell, the latter fitting into a bore formed'in the main casting or chest. Fig. 31 is a similar view of a shell to receive the controlling valve of the prime# moving air motor or engine. Fig. 32 is a perspective view of the valve chest. Fig. 33 is a perspective view of a duplex tumbler which forms an interponent between the tactors and the prime-moving air motor. Fig. 34 is a perspective view of a sear. Fig. 35 is a perspectiveview of a latch to detain the valve of the air motor. Fig. '36 is' a perspective view of a double latch for the tactors and their sears. Fig. 37 is a perspective view of the pilot valve that controls the supply of fuel to the furnace. is a perspective view of the valve of the air motor. Fig. 39 is a perspective view of a tactor to connect with the sear seen at Fig. 34. Fig. 40 is a worm whereby the factors may be adjusted to act at any desired point along the path of the voltmeter needle. Figs. 41 and 42 are perspective views of a voltmeter and tactor mechanism.

Fig. 38

In a furnace 1, provided with burners for mixed air and gas, is inserted an element 3, from which lead wires 4, to a voltmeter or other galvanometer 6, said wires connected to a pivoted rotating coil 7, to which is attached, in the ordinary manner, a needle or indicator 8, which moves along a scale 9 to show the condition oft-he f 10- tooth or projection 11 on its free end to dip furnace. A lever. 10 is caused by a prime mover to vibrate up and down, to cause a The tooth 11 is intended to be intercepted by the needle, whereby theglever 10 is ar rested, and the ,desired regulation of the vfurnace etected. vIt will be seen from the ensuing description t-hat a mere touch of the lever 10 upon the needle is suticient; and for convenience the lever or its tooth is termed a tactor.

The tactor may be made in avariety of forms and-need not necessarily be lreciproeatory; and it may be operated repeatedly by any kind of a prime mover. As an illustration, there is shown herein a prime mover in the form of a compressed-air engine, comprising a diaphragm 12 inclosed in a casing 13 and connected by a rod 14 to a beam '15. |The means by which the diaphragm v12 is caused to rise and fall repeatedly will be hereinafter explained.

The prime moving beam or arm 15- is connected to the tactor 10 to reciprocate the latter, through an interponent. This com-1 prises a rocker or tumbler 16, pivoted at 17 upon the framework. Said interponent is' .reciprocated by means of upper and lower lugs or shoulders 18, y19provided upon an elbow 2O of said prime vmoving arm 15; saidlugs adapted to engage a wrist 21 provided upon said interponent.

Ag spring 22 Vtends constantly to drop the tactor 10 into the path of the needle; but

' such movement is controlled by the tumbler 16. The spring, i't'will be seen, isv attached to an arm-23, theV latter pivoted at 24 on the frame work, the outer end of thelatter being connected by a universal joint 25 with an arm 26 of the tactor 10. Said tactor is itself pivoted between its ends at 27 upon a support 28 in vthe voltmeter box- 6. Fixed to thearln 23 is an arm 29, having at its end a finger 30, which,'at Figs. 5 and 6, is pressed by said spring against a stop or rest 31 formed upon the tumbler 16, whereby the tactor or tooth 11 is held up out of the path of the needle.' As the tumbler is turned by the 'prime mover from initial positiorin VAthe directionY shown by the arrow at Fig. 6, the lever 29 rides down an inclined edge 32 formed on one side of a notch in the tumbler, and reaches the position seen at Fig. 7.,

' the tactor 10 having, dur-in this movement.

dipped idlyinto the path o ythe needle.

A double-acting draw-spring 33, connected at one endto a pin 34 upon the interponent, and at the other end to a xedstud 35, resists the initial movement of the interponent from the Fig. 6 position, but after passing the dead center tends to swing the interponent to the other extreme of its movement (Fig. 9). Thus the rime moving arm 15 coperates with the sprlng to effect moveyment of the interponent; theprime moving arm lstarting the interponent from vinitial position until the spring is enabled to act upon the interponent to swing it farther in the same direction independently of the prime mover. Said springy 33, however, is permitted to .swing the interponent only to the positionseen at Fig. 7, .because the finger .30 of arm or sear 29V engages an abrupt edge or stop 36 which forms the other side ot the notch in the tumbler, and so prevents the spring 33 from eecting further movement of said tumbler or interponent. Things remain in thiscondition until the prime mover 15 begins its up stroke, whereupon its lug-19 engages and lifts the wrist'21 and turns the interponent in opposite direction until the spring 33 has again crossed the dead point, whereupon the spring completes t-he movement of the interponent back to the initial Fig. 6 position. During this return of the interponent, the inclined edge 32 cams up the lever arm 2Q", and lifts the taeter tooth 11y out of the path of the needle. The

i described movements are repeated idly while the furnace is heating up and the needle 8 is consequently swinging from its normal or zero position toward the tactor 10. Finally the advancing needle 8 swings directly beneath the tactor 11 (accidental movement of the needle past said tactor being prevented by a guard 37 pendent. from the taeter), and the tactor is consequently arrested at the beginning of its downward movement,

as seen at Fi 8. The taeter-moving spring 22 is so wea that the tactor exerts hardly any appreciablev pressure upon the needle. The latter is provided with opposite snpports 38, between which the tactor tooth dips; said supports being so close together that-a very thin and weak needle resting thereon is enabled to withstand the light pressure of the tac-tor without liability of injury, and without possibility of` the tactor forcin its wayl down past the needle,.or crowding the needle aside; so that the tactor is positively arrested. .The supports'38 are 'segmental inform, curving around the axls of movement of the needle, to permit the tactor to operate at any desired point along the .path of the needle, as will presently be explained. downward beat of the tactor is interrupted,

and hence the connected soar 29 is prevented iis ABecause of such arrest, the' i out or use.

n ragni 58 is connected from falling intogthe notch 32, 36 in tumbler 16; end in consequence, when from the eear 29. During the inel portion of the swing of the interponent to the Figi f) nositiomegpin 39 thereon strikes e .letch et() (pivoted et el upon the framework) and moves it to the right to e position to catch the finger 30 of the Sear 29, whereby the senr and its connected tactor l0 are letched Acem lf/J, ornied'on the tuinhier next to the stop 3G, serves-to lift the scar 29 high enough to slip into the 'notch 43 of the latch; this movement of the Sear being also euilicient to vliil't the 'tactor l0 sufficient-ly to bring its needle guard 3'? clear of the needle 8, as shown et Fig. 9; und if there should he e further temporary -increase in the heet of the furnace, it will he accurately, shownhy the needle, while injury to the needle or coil is avoided. The lector and seer being new latched, remain Stationery during the continued operation ot the prime mover and the inte ponent, the movements of these two elements not being interrupted'hy reason o' the arrest of the taeter by the ne le. Seid interpellent also nerormsjthe function of controlling :i valve del., 'which slides up end down in e cylinA drical shell 4&5, the letter formed with suitehle ports and chenne s, and lit-ted tightlyT Within e-verticel here 4&6 extending down into the top of @heet 15? ereeted'upon 'the diaphragm casing- The @in 39 of the interpellent is 'prolonged to play between upper and lower shoulders 0 l ed on Seid Valve e interponent to f- "51d 9, the i r 1'- e easing.

L .3y Stein @d vertical hollow cylindrical veine Gli,` A. eole and down o, fined n.1', e controlling the feed of compressed eir from 1 e n' of ges through esup- 1 ,the furnace f" can@ Velbow or branch 73, which opens into the rlflie valve 6i is divided by a niidwey partition 65 into upper and lower chambers 65', 67. The upper chamber 66 is provided with in inlet port 68, opening from the eir supply pipe 68, and an outlet port 69, opening into e @ipe 70 lending to the furnace. l"She lower Valve chamber 6'? is provided with similar ports 71, Y2, in communication respectively with the ges supply 6e and en piper 70. rlhese ports ere placed so as to secure proper proportions olf en' and during all iuctuations in the Volume o the mixture fed into the burners. lt will he seen that the dropping of the valve 61, caused by the moi/'ement o1n the pilot or primary Valve member 44, to its Fig. #l position, nearly cuts 0E the supply of ges and air from the burners, and hence the flames 7e are reduced, thus preventing the heet of the 3 furnace from increasing,` eppreeiehly, it any, beyond the point :it which it Stood :it the moment when the tector l0 was arrested by the voltmeter needle 8.

lt will he understood from the foregoing,

Y that upon lighting the furnace end starting ITW. J. i

tactor re c interponent to Swing over 39, as et Fig. El, the late ously swung; air/ey te releer-,se the eeor taeter Yo, and permit th un Zilli and a companion tumbler 86 fixed thereto,

and of opposite construction, to cooperate. with the sear 82 and tactor 75 inthe manner already described with reference to the tumbler 16, sear 29 and tactor'lO. 'A likev spring '87 similarl to 22 tends to cause the tactor 75 to beat into the path of the needle, and causes the sear 82 to rest upon a stop 88 on the tumbler 86. It will thus be seen that two trains of mechanism ramify from the prime mover to the needle, and that either set may be rendered effective and the other simultaneously ineffective. At the next upward stroke of the prime mover 15 following the latching up of the tactor 10 and the releasing of the tactor `75, the shoulder 19 on said prime mover engages thewrist 21, and lifts it to turn the tumbler 86, while the Sear 82 rides down an incline 89 correspondinglto the incline 32 on the other member of the duplex tumbler, and permits the tactor 75 to beat down into the path of the needle. The prime mover continues to lift the pin 21 until the double-acting spring. 33 passes the dead center, whereupon the spring causes the movement of the tumbler io continue until it is prematurely'arrsted', Fig. 15, by the engagement ofthe sear 82 (or "of its finger 83)-with 'a st'op 90 corresponding .with 36. Atv this moment, tooth f7 7 of the tactor 75 is down past the needle and between the supports 38. At the next downward movement of the prime mover 15, the shoulderv 18 depresses the wrist 21v suiiiciently to carry the spring 33 up past lthe dead point, whereupon the spring snaps the interponent up to the Fig. 14 position.v This beating action continues, the tumbler 16 vibrating idly in unison with the effective tumbler 86, while the tactor 10 remains latched up out of use, and 'until the needle 8, which is now making a retrograde movement because of the reduction in the heat vof the furnace (due to the reduction of the fuel supply thereto), intercepts tooth 77 of.

tactor whereupon said 'tactor is arrested, together lwith the sear 82, in the Fig. 16 position, and said sear is preventedv from causing the interponent to stop at the Fig. 15 point, and hence said interponent is driven by the spring 33 around to the Fig. 17 position. A cam 91 on tumbler 86lifts the scar 82, and pin 21 swings latch 85 over to catch the finger 83 of said sear, whereby the latter is latched out of use and its connected tactor 75 is elevated above the needle, as at Fig. 17. At the same time, the pin 39 on the double tumbler or `interponent engages the bottom shoulder 49 on the Valve member L14, Fig. 5, and depresses said member to carryV the valve proper 92 down, -to close the passage, between the diaphragm pipe 54 and the exhaust 55, and to open a passage from a branch 93 of the compressed air supply pipe 63, so that air may owfrom said branch 93 through the chamber shell 46 into the pipe 54 and thence to the diaphragm head 59, to lift the diaphragm and the valve 61' to the Fig. -5 position, thus opening wide vthe ports and permitting. a full supply of mixed gas and air topass to the burners, whereby the llames 74 are increased ,'to normal size, and the furnace is preventing from cooling further, and begins to heat upagain.

The described movement of the latch 85 to the Fig. 17 position tolock tactor 7 5 out of use, was accompanied by amovement of the latch 40 to release the sear 29 and tactor 10, said tactor and scar again becoming active and operating in the manner already described. The needle of the voltmeter thus moves from zero position up to the eld of the duplex tactor mechanism, and then has slight oscillation :in-said eld back and forth from one tactor to the other, whereby the heat of the furnace is maintained within exceedingly close limits, and in practiceV is found to keep within two or three degrees of the desired point,\even at ligh heats required for hardening steel or otherwise heattreating'metals and other materials. This close regulation is of .great importance in many cases, especially where it is desired to heat the articles precisely and uniformly for a considerable length of time. There is practically no waste of fuel, so that a great saving is effected in the cost of operation; while the life of the element 3 is greatly prolonged, since it is never subjected to 'eX- cessive heat.

. .It will be seen that by this device even the thizrneedle or indicator of any instrument may be used without liability of damage to itself and without requiring it to put forth any power to operate the regulator, as it is simply required to move into proper position by its own impulse, to form an interceptor, to enable the regulating device to start or suspend the operation of a machine.l

The invention is especially valuable in cases where it is necessary to make thepindicator lof frail construction, and inwhich the power which moves the indicator is very weak, while at the same time great accuracyV of action is4 demanded. '.The indicator is usedv only as a temporary inert support or fulcrum for the tactor, or as an interponent between the tactor and the fixed support 38, and is notcalled upon to exert any force beyond that required to move itself into position between the two devices 11. `and 38, whereby may be accomplished a shifting of any desired Amechanism to an alternative position, so that agreat variety of results may be accomplished besides .reducing or increasing the supply'of mixed airrand gas to a lala ' position, or to a still lower position,ras will When the arm 15 reaches its lowest posibe presently explained.

tion, the spring 119 snaps the valve member 116 up to the Fig. 22 position, so that the upper valve 135 thereon closes the upper chamber 136 in the shell 117, and also closes the exhaust port 126 to the passage 122 leading to the under side of the diaphragm 12; but air escapes from the top of the diaphragm 12 through the passage 134 and port 133,passing through the bottom annular chamber 132 and the perforations 131 and then down through the bottom of the shell 117, as shown by the arrows at Fig. 27, and through a passage 137 to the exhaust chamber 56. AtV the same time air enters from the branch supply passage 127 and port- 128, as shown by the arrows at Fig. 27,

and passes through the middle annularv chamber 129 into the( interior of the shell, 'and thence up and out throughI the topperforations 125 into the annular chamber 124, from whence it passes ,through the port 123, as seen at Fig. 23, and down through the passage 122, 121, as shown by the arrows,

into the bottom part of the diaphragm chamber, to .lift the diaphragm rod 14 and arm 15 to the Fig. 22 position.

The speed of operation of the air moto-r is regulated by a throttle screw 138, Figs. 24 and 28, having a securing nut 139. This screw may be turned in, to partly close the air supply passage 127 and the port 128. to any desired extent, so that the arm 15, and hence the tactors, may be caused to beat at any desired rate.

` It will be seen that the valve rod 1116' is reduced in diameter to form stems 140 and 141 between the upper and lower valves 135.

and 142 thereon, said stems coperating with the inner walls of the shell 117 to form al nular passages for the described movements of air. The lower valve 142cuts off communication between lthe* port 133 and the port 128 and exhaust chamber 56 in alternation, while the upper valve 135 performs the same functions between the ports 123 and 128 and exhaustchamber 56, so that the diaphragm 12 is caused to move up and -down in response to the movements of the valve to alternative positions. i

Pivotedupon the framework at 143 is a latch 144, having a shoulder 145 to engage a lug 146 upon the valve member 116, to hold up said valve during the ascent. of the arm 15 and consequent downward tensioning of the spring lever 119; the latter coiled 0 around a fixed rod or fulcrum 147, and connected by an arm 148 to a swiveled pin 149 on the arm 15. Near the top of the stroke of the arm 15, Fig. 23, a pin'150 on the arm strikes a` releasing arm 151 formed on the latch, and swings the same to the righ-t to cause the shoulder 145 to release the-lug 146 (Fig. 22) and permit the spring arm 119 to snap the valve 116 down. The latch 144 is provided with a spring 152, which causes a shoulder 153 upon the bottom of the latch to swing o-ver the pin 146, Fig. 25, to'lock `the valve down. Ori the down ,stroke of the arm 15, a pin 154 on said arm engages a release arm 155 on the opposite side of the latch, to swing the latch to one side and release the pin 146 (which transti'xes the valve 116 and is guided in a vertical slot 147 a in the plate 52, Figui) and the spring 119 then snaps the valve up to the/position at Figs. 22 and 23, whereupon the spring 152 swings the latchfrom the Fig.

22 position to the Fig. 23 position, to hold the valve up until the completion of the upward movement of the arm 15.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Reference is hereby made to my co-pendl ing applications No. 328,697, filed Augustl, 1906; No. 432,341, filed May 12, 1908; and No. 412,829, filed January 27, 1908; certain features disclosed in this application 'being covered in certain of said applications; 'but the present application being limited to features .not covered by any of said applications.

Having thus .described my invention, I claim: l

1. An electrically operating regulator comprising a voltmeter having a movable needle, a member caused to dip repeatedly into the path of said needle, and regulating means connected to said dipping member and rendered effective by the coperation of said needle and said dipping member.

v2. The combination with an apparatus to be regulated, and a member connected to Vthe apparatus and moved thereby to indicate the condition .of the apparatus, of a regulating mechanism including apart caused to beat into and out of the path of loc said indicator', and means connected'to said l beating part for enabling said indicator and said beating part to coperate to effect the desired regulation. I

3. The combination with an apparatus to be regulated, of a voltmeter or electrical device connected to'said apparatus and having a needle or member movable to indicate the condition of the apparatus, and a regulating mechanism including a part caused to dip repeatedly into the path of said needle and means connected to said dipping part for enabling said needle to coperate with said dipping part to effect the desired regulat-ion.

4. The combination with a voltmeter or device including a movable needle, of a tactor, means for causing said tactor to beat into the path of the needle, and a regulating l voltmeter having a movableneedle,

-to move said tactor in to the pat 15. Thecombination of a voltmeter having a movable needle, a rocker, a doubleacting spring holding said rocker in one position, a regulating device, a prime mover controlling said regulating device and capable. of moving said rocker to carry the .spring past the dead point, and a tactor caused by said rocker to beat across or into the pathof said needle, and having means operating at every and said prime mover, to prevent operation of said regulating device.

16. A regulating apparat-us comprising a a regulator, a rocker -to control said regulator, a double-acting spring holding said in one position, a prime mover capable of moving said rocker to carry the spring past the dead point, a tactor, a sprin tending of said needle, means controlled by said rocker to permit the tactor to dip into the path of said needle at the initial actuation of the rocker by said prime mover, and means associated With said tactor and operative at such movement of the lat-ter for arresting the rocker and thereby rendering the prime mover ineffective to cause a complete operation of said regulator.

17 A regulating ap device having a inova ing part,

arat-us comprising a le needle or indicata tactor movable into the path of the needle, a tumbler, a prime moving isv prevented from arm or device to cause said tumbler to Withdraw the tactor from the path of the needle, means including a spring to cause said tumbler to move said tactor into the path of the needle, means for enabling the last mentioned movement of the tactor.. to arrest said tumbler, and regulating means operable by the tumbler under the iniuence. of said spring ivhcn said tactor is prevented by said needle from arresting the tumbler.

1d. A regulating apparatus comprising a device havingV a movable needle or indicating part, a tactor movable into the path ot the needle, a sear connected to said tactor, `a tumbler engageable by said Sear, a rime meyer coperatingwith la s ring toe ect a reciprocation of said vtuuu ler, the latter on said sear to cause the tactor to dip into t 1e path of the needle, and being also arrest'able by said scar at such movement ofthe tumbler, and re lating means operable by the tumbler un er the infiuence of said spring when said scar by reason of the engagement Aor' the tactor with the needle. l i

19, A regulating ap' device having a mova ing the needle, a`springpressed sear connected to said tactor, al tumbler engageable by said le needle or indicatsear and having a part forming a Irest .path of the needle,

to enable the sear to arrest ulating means operable beat to arrest said rockerl falling into said rockerl l.

arresting said tumbler.

aratus com'pris'il'l'gy a1 n needle, part, a tactor movable intothe path oi.-

against which the scar is pressed, a primemover coperating with a spring to eiect reciprocation of said tumbler, the latter having a cam or notch into .Which the seal.' drops durin the movement of the tumbler, whereby said tactor is caused to dip into the a Wall of said notch forming a stop the tumbler, and re by the tumbler un er the influence of its spring when said Sear is ,prevented from notch by reason of the engagement of the tactor With the needle.

20.l The combination of a regulating mem- G ber, a prime mover tending repeatedly to.

cause the effective operation of` said regulating member, and a controlling device extending 'from said regulating member and including a tactor caused by said prime mover to dip repeatedly into the path of a soL movable indicating .needle and at' such, movement to render said regulating member inefective, whereby when said tactor is Y arrested by contactv` with said needle, redulating member is ypermitted to `become e ective.

device having a movable needle, of a tactor, means for moving said tactor repeatedly into and out of the path of the needle, a guard upon said tactor to prevent the needle from passing by the same, and a controlling thev i 21. The combination with a voltmeter orl or regulating device called into action by @reason 'of the arrest of the tactor by said needle.

22. The combination with a voltmeter or device having a movable needle, of a support for the point of said needle, a-tactor, means for moving said tactor repeatedly into and out of the path of the needle in proximity to said support, and a controlling device-.connected to said tactor and called into action by reason of the arrest of the tactor by saidl needle and its support. 23. The combination with a voltmeter or indicating device having a movable needle, of supports for the point of said needle, a tactor, means for moving said tactor repeatedly into and out of the path of the needle between said supports, and a controlling or re ulating device connected to said tactor an called into action by reason of the arrest of the tactor bysaid needle and its supports. ,i 24. The combination with a voltmeter or de vice'including a movable needle, of a tacv tor, means for ad'ustinglthe tactor to di'erent points along t e pat of4 movement of the needle, means for moving-said tactor re peatedlyinto' and out ofthe path of the and a controllin device connected to the tactor and called into action by reason of the contact ofthe tactor with the needle... v.

`:- 25. The combination with a voltmeter or edly into the path of said needle, and regulating means connected to said dipping member and rendered effective by the coperation of said needle and said member, means being provided for permitting adjustment. to be e'ected manually between the dipping member and the needle,

`to cause the regulation to take place at different points in the movement of the as required.

26. The combination With a movable indi` cator, of a part caused by a prime mover to beat into and out of the path of lsaid indicator, and means connected to said beating part for enabling said indicator and said beating part to coperate to effect. the desired regulation; said beating part being vadjustable along the path of the indicator, to determine Ithe point in the movement of the indicator at which the regulation shall be effected.

27. The combination With an apparatus to be regulated, of a voltmeter or electrical device connected to said apparatus and having a pivoted needle movable about its pivot to indicate the condition of the apparatus, a regulating' mechanism including a part caused to dip repeatedlyin to the path of said needle, means for enabling` said needle to cooperate with said dipping part to effect the desired regulation, and means to adjust said dipping part about the pivot of the needle. j

2S. The combination with a volt-meter including a movable needle, of a tactor adjustable along the path of the needle, means for causing said tactor to beat into the path of the needle` and a regulating or controlling device called into action by reason of the contact of the tactor with the needle; said tactor being connected to said regulating device by a loose' connection to permit the tactor to be adjusted along the path of the needle.

29. The combination with a voltmeter including a needle, of a tactor, a regulatable apparatus subject to variation which causes movement of said needle toward said tactor, a prime mover for causing said tactor to beat int-o t-he path of the needle, means called into action by reason of the contact of the tactor with the needle to regulate or control said apparatus, and a rotatable nneedle,

ger-piece having means for effecting fine ad-l justment of the tactor along the path oi? the needle.

30. A heat-regulating apparatus comprising an element or device whereby the heat produces an electric-al current, a voltmeter connected to said element and having a needle or member to be moved by the current, and a regulating mechanism including a part caused to dip repeatedly into the path dipping p said stop to permit the of said needle and means for enabling said needle to coperate with said dipping part at any desired point along the path of travel of the needle to eliect the desired heat regulation.

3l. The combination of a voltmeter having a movable needle, a regulating device, a

lprovided between said tactor and said prime mover, and the tactor being mounted for adjustment along the path of the needle.

-32. The combination of a voltmeter having a movable needle, a tactor sWiveled for adjustment along the pat-h of said needle, means loosely connected to said tactor adjacent to its swiveling point for causing said tactor to beat into the path of the needle, and a regulating device called into action by reason of the arrest of the tactor by the needle.

33. The combination With a voltmeter, of a device having a pivoted needle, a regulating device, a prime mover capable of causing a full operation of said regulating device, and a tactor svviveled for adjustment around the pivot of the needle, and connecting means from said tactor to said prime mover to cause the former to be moved into the path of said needle, and having means effective at such movement to render said prime mover ineffective to cause a full operation of said regulating device; said tactor being loosely joined to said connecting means adjacent to its swiveling point.

34. The combination with a pivoted indicating needle, of a tactor device comprising two parts loosely connected, the first of said parts swiveled adjacent to its point of connection to the'other part, for adjustment along the path of the needle, a spring tending to move the said first part into the path of said needle, a rest or stop against Which the second part of said tactor device is pressed by said spring, a regulating device, and a prime mover operating said regulating device and having means to Withdravv7 said stop to permit the spring to move said second part into thepath of said regulating device to arrest the same.

35. The combination with a pivoted needle or member, of a tactor comprising two levers loosely connected, the irst of said lebers siviveled near their point of connection for adjustment along the path of the needle, a spring tending to move the first lever into the path of said indicating member, a rest or stop against which the second lever is pressed by said spring, means to Withdraw spring to move said 

